What makes a cell responsive to a particular hormone?
A. The chemical properties of the hormone
B. The presence of a receptor for that particular hormone
C. The location of the gland that secretes the hormone
D. The location of the target cells in the body
E. The site where the hormone is secreted
B. The presence of a receptor for that particular hormone
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Each secondary bronchus supplies air to a:
A) hilum. B) lobe of the lung. C) lobule of the lung. D) bronchopulmonary segment.
As a result of the long refractory period in the cardiac action potential, cardiac muscle cannot exhibit
A) tonus. B) treppe. C) tetany. D) recruitment. E) fatigue.
One of the functions of blood is to regulate fluid levels in the body. If too much fluid escapes from the bloodstream and enters the tissues, blood pressure will
A. increase. B. decrease.
Which pelvis in the diagram shows the characteristics of a female pelvis?
a) A b) B c) Both are male.